A230661 - cp's OEIS frontend

A230661 T(n,k)=Number of nXk 0..2 black square subarrays x(i,j) with each element diagonally or antidiagonally next to at least one element with value 2-x(i,j).

n	a(n)
1	1
2	0
3	0
4	0
5	3
6	0
7	0
8	3
9	3
10	0
11	0
12	9
13	15
14	9
15	0
16	0
17	15
18	21
19	21
20	15
21	0
22	0
23	33
24	135
25	123
26	135
27	33
28	0
29	0
30	63
31	177
32	531
33	531
34	177
35	63
36	0
37	0
38	129
39	1155
40	2547
41	8613
42	2547
43	1155
44	129
45	0
46	0
47	255
48	1509
49	11745
50	28161
51	28161
52	11745
53	1509
54	255
55	0
56	0
57	513
58	9855
59	54957
60	477279
61	337977

[1, 0, 0, 0, 3, 0, 0, 3, 3, 0, 0, 9, 15, 9, 0, 0, 15, 21, 21, 15, 0, 0, 33, 135, 123, 135, 33, 0, 0, 63, 177, 531, 531, 177, 63, 0, 0, 129, 1155, 2547, 8613, 2547, 1155, 129, 0, 0, 255, 1509, 11745, 28161, 28161, 11745, 1509, 255, 0, 0, 513, 9855, 54957, 477279, 337977]

cp's OEIS Frontend

A230661 T(n,k)=Number of nXk 0..2 black square subarrays x(i,j) with each element diagonally or antidiagonally next to at least one element with value 2-x(i,j).

Table of values

List of values